Process for low-temperature CVD production of coverings applicable to materials in electric power generation plants. Coatings are produced at low temperature based on modified iron aluminides by means of the addition (or not) of reactive elements and other protective phases based on Fe-Al-Mn, Fe-Cr, Fe-Si compounds and Fe-Mn1 spinels from iron-based ferritic/martensitic alloys. These coatings are useful as structural elements in electric power production plants (hereinafter PPE) for production of power from urban and industrial solid waste (RSU, RSI), combustion gases derived from various fuels, combustible fractions of various natures, synthesis gases, thermal and catalytic cracking gases, biogases, pyrolysis processes...